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Question No. 175Interactive Test Mode
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Q175. Assertion (A) : Ganga plain is the most densely populated part of India. Reason (R) : Ganga is the most harnessed river of India.

Assertion (A) : Ganga plain is the most densely populated part of India. Reason (R) : Ganga is the most harnessed river of India.

Select the correct option below (or cross out options to eliminate)

Official Answer Key & Detailed Solution

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Click any option above to test yourself under exam conditions, or reveal the explanation directly.

Official UPSC Answer KeyUPSC Prelims 2000 • Geography

Correct Answer: Option (B) — Both A and R are true but R is not a correct explanation of A

Concept & Option Breakdown

Standard Reference Verified
  • Assertion (A) is true: The Ganga Plain is indeed one of the most densely populated regions of India due to its fertile alluvial soil, flat terrain, favorable climate, and abundant water resources.
  • Reason (R) is true: The Ganga is extensively harnessed through barrages, canal networks, and diversions for irrigation and power generation.
  • However, R is not the direct or sole cause of the high population density; the deep historical settlements, soil fertility, and agricultural carrying capacity are the primary underlying causes.
Elimination Heuristic & Exam Approach

Both statements are factually true statements of Indian geography, but being 'the most harnessed river' is a result and secondary factor, not the primary fundamental driver for high demographic density.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2000 (Q175)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicGeography → Human & Political Geography
Official Answer KeyOption (B) — Both A and R are true but R is not a correct explanation of A

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Frequently Asked Questions — UPSC Prelims 2000 Q175

What is the official answer for UPSC Prelims 2000 GS Paper I Question 175 (Geography)?

The official UPSC answer key for this 2000 Geography (Human & Political Geography) question is Option (B): "Both A and R are true but R is not a correct explanation of A". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2000 question belong to?

This question belongs to GS Paper I under the subject "Geography" and micro-topic "Human & Political Geography". You can explore all repeated questions from Human & Political Geography in Acme AI's 3D Prelims PYQ Realm or practice 50 full-length and sectional tests in the APT Prelims Test Series.

How can I solve this Human & Political Geography UPSC Prelims question using option elimination?

Both statements are factually true statements of Indian geography, but being 'the most harnessed river' is a result and secondary factor, not the primary fundamental driver for high demographic density.

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